Guide to repair Windows 11/10 installation in-place using the bootable Installation USB or DVD without losing data. Repair UEFI or BIOS bootloader.

System Restore results in an endless loop of Automatic Repair? Find out what you can do if Windows 11/10 won't boot after System Restore.

Here’s how to make everything right if your master boot record was erased. How to fix the MBR The main way to fix the MBR is to use a command prompt and run the bootrec.exe command.

In Windows Vista, Boot.ini is gone. So how do you control options for a multi-boot system? You can use Microsoft's command-line tool, Bcdedit.exe. But a free third-party tool, VistaBoot Pro, is a ...

Warnings Once a boot option is fully deleted, it is difficult to re-enable that option. If you might use the secondary operating system in the future, consider following the first set of directions.

Another option is the parallel installation of two or more operating systems on a hard drive or SSD, known as multiboot. After switching on the PC, you select which operating system should start ...

Boot in Safe Mode when you're troubleshooting an issue, or if Windows won't start normally. To exit Safe Mode, ensure it's disabled in the Boot Options, or just restart your computer.

Microsoft will take nearly a year to finish patching new 0-day Secure Boot bug Fix will eventually render all kinds of older Windows boot media unbootable.